Internal combustion motor valve timing device



March 10, 1936. L. H. KIENEE 2,033,140

INTERNAL COMBUSTION MOTOR VALVE TIMING DEVICE Filed March 5, 1955 2Sheets-Sheet l Louz'afi Kiem INVENTOR ATTOR N EY WITNESS:

March 10,1936. L. H. KIENE 2,033,140

INTERNAL COMBUSTION MOTOR VALVE TIMING DEVICE Filed March 5, 1955 2Sheets-Sheet 2 Louzla'ffffiene INVENTOR E55= ATTORNEY err.

ENTERNAL COEEUSTEON MOTQR VALVE TIMKNG DEVECE Louis H. Kiene, Buffalo,N. Y.

Application March 5,

5 Claims.

This invention relates to valve timing mechanisms for internalcombustion engines, and has for the primary object the provision of adevice of this character which will provide more accu rate timing of thevalves of an engine to render the latter more economical and efiicientin operation and is accomplished by opening the valves quicker due tocams rotating at crank shaft speed and having means for preventing theoperation of said valves during every other revolution of said cams.

With these and other objects in view, this invention consists in certainnovel features of construction, combination and arrangement of parts tobe hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had tothe following description and accompanying drawings, in which Figure lis a side elevation, partly broken away, illustrating an engine andshowing valve operating means constructed in accordance with myinvention.

Figure 2 is a fragmentary sectional view showing my invention positionedto interrupt the operation of the valve by the cam.

Figure 3 is a transverse sectional view showing a Valve of the engineopened by my invention.

Figure 4 is a fragmentary end view showing the F drive between the crankshaft and cam shafts,

the cover plate therefor being removed.

Figure 5 is a sectional view taken on the line 5-5 of Figure 2.

Figure 6 is a view similar to Figure 2, showing a modified form of myinvention.

Referring in detail to the drawings, the numeral l indicates aconventional type of internal combustion engine equipped with springseated valves 2 for controlling the intake and exhaust ports of theengine. The engine has the usual cam shaft 3 and an auxiliary cam shaftThe shafts are connected by gears 5 and one of said gears is connectedto the crank shaft 6 by a sprocket chain 1. The drive between the crankshaft and said cam shafts is such that the cam shaft 3 rotates at thesame rate of speed as the crank shaft while the cam shaft l rotates aton half speed of the crank shaft. The cam shafts 3 and 4 are equippedwith cams 8 and 9. The cam shaft 3 is arranged in. alignment with thevalves while the cam shaft 4 is disposed laterally of said valves and ina plane above the cam shaft 3.

A horizontally arranged supporting shaft 56 is carried by the engine Ilaterally of said valves and in a plane below the lower ends of thevalves and 1935, Serial No. 9,492

has journaled thereon valve lifter guides H and which slidab-ly supportvalve lifters l2, the lower ends of which are provided with heads I3having arcuately curved cam engaging faces to be engaged by the cams 3and the latter each are of substantially fan shape While the cams 9 areof elongated formation.

Cam races It are fixed to the valve lifter guides and receive thereinthe cams 9 which during their rotation move or swing the lifter guideson the supporting shaft Hi to position the lifters in align ment and outof alignment with the valves and cams 8 as suggested in Figures 3 and 2.

Internal ribs it are provided on the valve lifters or the stems thereofand operate in grooves in the lifter guides to prevent rotation of thelifters within the guides but still permitting the lifters to sliderelative thereto. Stops I6 and H are provided on the lifter guides andthe engine I to abut one another for the purpose of limiting theswinging movement of the lifter guides in one direction so as to bringabout proper aligning of the lifters with the valves and cams 8 during acertain position of the lifter guides.

The cams 8 and 9 are so arranged for the timing of the valves that thecams 9 will position the lifters in alignment with the valves and cams 8to bring about quick opening of the valves during one rotation of thecams B and during the next rotation of said cams 8, the cams 9 move thelifter guides and the lifters out of alignment with the valves and cams8 so that the valves during the last referred to rotation of the cams Bwill be unaffected by said cams 8 or, in other words, permitted toremain closed. The cams 3 rotating at crank shaft speed bring aboutquick opening of the valves which assures more efficient operation ofthe engine by permitting a better intake of fuel to the engine andexhaust of the spent gases from the engine.

Referring to my modified form of invention, as shown in Figure 6, rockerarms iii are provided as operating mediums between the cams 8 and thevalve lifters l2. The cams 8 in this form of invention are locatedlaterally of the valves and the rocker arms are journaled on asupporting shaft i9 and equipped with springs 25 acting to bring therocker arms in continuous engagement with the cams 8. Also in this formof invention the valve lifters have the heads I3 F omitted.

Having described the invention, I claim:

1. In an internal combustion engine having spring seated intake andexhaust valves and a crank shaft, main and auxiliary cam shaftsjournaled to the engine, driving means between the crank shaft and thecam shaft whereby the main cam shaft will rotate at crank shaft speedand the auxiliary crank shaft will rotate at one-half crank shaft speed,cams on said cam shafts, lifter guides pivotally mounted to the engine,lifters slidably supported by said guides for imparting movement to thevalves by the cams of the main cam shaft, and means between the lifterguides and the cams of the auxiliary cam shaft to position the liftersand guides out of the path of movement of the cams of the main camshaft.

2. In an internal combustion engine having spring seated intake andexhaust valves and a crank shaft, main and auxiliary cam shaftsjournaled to the engine, driving means between the crank shaft and thecam shaft whereby the main cam shaft will rotate at crank shaft speedand the auxiliary crank shaft will rotate at one-half crank shaft speed,cams on said cam shafts, lifter guides pivotally mounted to the engine,lifters slidably supported by said guides for imparting movement to thevalves by the cams of the main cam shaft, and cam races fixed to thelifter guides and engaged by the cams of the auxiliary shaft.

3. In an internal combustion engine having spring seated intake andexhaust valves and a crank shaft, main and auxiliary cam shaftsjournaled to the engine, driving means between the crank shaft and thecam shaft whereby the main cam shaft will rotate at crank shaft speedand g the auxiliary crank shaft will rotate at one-half crank shaftspeed, cams on said cam shafts, lifter guides pivotally mounted to theengine, lifters slidably supported by said guides for imparting movementto the valves by the cams of the main cam shaft, cam races fixed to thelifter guides and engaged by the cams of the auxiliary shaft, said camsof the main cam shaft being of substantially fan shape and the valvelifters having heads provided with arcuately curved faces to be engagedby the cams of the main cam shaft.

4. In an internal combustion engine having intake and exhaust valves anda crank shaft, main and auxiliary cam shafts journaled to the engine,lifter guides pivoted to the engine, cams on said cam shafts, cam racesfixed to the lifter guides and engaged by the cams of the auxiliary camshaft, valve lifters slidable in said guides, rocker arms journaled tothe engine and engaging the cams of the main cam shaft and adapted toactuate the valve lifters during one revolution of the crank shaft, saidvalve lifters being positioned by the cams of the auxiliary cam shaftout of the path of movement of the rocker arms during the nextrevolution of the crank shaft, and a drive means between the cam shaftsand the crank shafts whereby the main cam shaft will be rotated at crankshaft speed and the auxiliary crank shaft rotated at one-half crankshaft speed.

5. In an internal combustion engine having spring seated intake andexhaust valves and a crank shaft, main and auxiliary cam shaftsjournaled to the engine, driving means between the crank shaft and thecam shafts whereby the main cam shaft will rotate at crank shaft speedand the auxiliary cam shaft will rotate at onehalf crank shaft speed,cams on said cam shafts, valve lifter means engageable with the valvesand the cams of the main cam shaft for opening and closing the valvesduring a revolution of the crank shaft, and means connecting said valvelifter means to the cams of the auxiliary cam shaft to move the valvelifter means out of engagement with the cams of the main cam shaftduring the next revolution of the crank shaft to permit said valves toremain closed.

LOUIS H. KIENE.

